[SPARK-21801] SparkR unit test randomly fail on trees

• Type: Bug
• Status: Resolved
• Priority: Critical
• Resolution: Fixed
• Affects Version/s: 2.2.0
• Fix Version/s: 2.3.0
• Component/s: SparkR, Tests
• Assignee: Felix Cheung
• Reporter: Weichen Xu
• Created: 22/Aug/17 03:56
• Updated: 03/Sep/17 07:20
• Resolved: 29/Aug/17 17:10

Description

SparkR unit test sometimes will randomly occur such error:
```
1. Error: spark.randomForest (@test_mllib_tree.R#236) --------------------------
java.lang.IllegalArgumentException: requirement failed: The input column stridx_87ea3065aeb2 should have at least two distinct values.
```
or
```
1. Error: spark.decisionTree (@test_mllib_tree.R#353) --------------------------
java.lang.IllegalArgumentException: requirement failed: The input column stridx_d6a0b492cfa1 should have at least two distinct values.
```

Issue Links

• links to: [Github] Pull Request #19018 (felixcheung)
• links to: [Github] Pull Request #19018 (felixcheung)
• links to: [Github] Pull Request #19111 (felixcheung)